Ramses User Meeting 2019

Session

Protostellar Systems

2 Oct 2019, 14:20

Niels Bohr Institute

41. Simulating the formation of binary stars

Dr Rajika Kuruwita (Niels Bohr Institute)

02/10/2019, 14:20

I present theoretical work done using the AMR MHD code FLASH on the formation of binary stars and the evolution of their discs in these systems. I simulated the collapse of molecular cores until the formation of protostars and followed the early evolution of these systems. I investigated the influence that binarity has on the global evolution of a young stellar system, including looking at...

42. Zooming-in on protostellar multiple formation

Michael Küffmeier (Zentrum für Astronomie Heidelberg (ZAH))

02/10/2019, 15:10

Stars form as a consequence of gravitational collapse in Giant Molecular Clouds. Contrary to models of individual stars forming due to the collapse of an isolated core, we account for the molecular cloud environment during the epoch of star and protoplanetary disk formation. Using zoom-in simulations with the magnetohydrodynamical codes RAMSES, we investigate the accretion process of young...

43. Simulations of auto-gravitating disks with Ramses

Mr Noe Brucy (CEA)

02/10/2019, 15:30

We run hydrodynamical simulations of protoplanetary disk to investigate the effects of a classical very simplified cooling model on disk fragmentation. The goals are to estimate the fragmentation boundary when using a Godunov scheme, probe convergence and build a simple analytical model.

44. Dust dynamics in RAMSES : Protostellar collapse and disk formation

Mr Ugo Lebreuilly (CRAL)

02/10/2019, 15:50

Dust grains are the building blocks of protoplanetary disks and planets. Dust regulates the thermal evolution of the disk through its opacity. In addition, it plays a major role in the coupling between the gas and the magnetic field, hence in the disk and jet formation. In observations, the polarized light emitted by the grains can be used to measure the magnetic fields orientation or to...